Clevis



UNITED STATES PATENT OFFICE.

WILLIAM E. PENNINGTON, or BAKEEs MILL, VIRGINIA.

oLEvls.

SPECIFICATION forming part of Letters Patent No. 508,117, dated November 7,1893.

Application led September 15, 1893. f Serial NoI 485,617. (No model.)

' To all whom t may concern):

accordance with Iny invention.

Be it known that I, WILLIAM E. PENNING- TON, a citizen of the United States, residing at Bakers Mill, in the county of Rockingham and State of Virginia, have invented a new and useful Clevis, of which the following is aspecication.

My invention relates to improvements in clevises and to` that particular class thereof that is yielding or spring supported and especially designed for use onthe ends of plowbeams. v

The objects of my invention are to produce a cheap, simple and durable construction of clevis of this class in which the line of draft may be readily changed and which will afford a yielding connection between the draft-devices and end of beam.

With these and other object s in view the invention consists in certain features of construction hereinafter specified and particularly pointed out in the claims.

Referring to the drawings: Figure 1 is a perspective view of a clevis constructed in Fig. 2 is a vertical longitudinal sectional view. Fig. 3 is a detail in perspective of the end of the beam previous to the application of the clevis. Fig. 4 is a detail in perspective of the clevis; Fig. 5 a similar view of the cast metal endpiece forming the clevis guide.'

Like numerals indicate like parts in all the l figures of the drawings.

In the drawings, 1 designates the end of an ordinary beam, which beam has its front end provided with a shortlongitudinal bore 2 and is also provided with a longitudinal slot 3 which bisects the beam. The beam is thus prepared for the application of my device.

Fitted snugly over the beam,embracing the end, and the upper and lower sides, is a U- shaped casting, consisting of a vertical endpiece 4 and upper and lower parallel sidepieces 5, the latter being perforated adjacent to its corners asindicated at 6, for the accommodation of four vertical bolts 7, which also pass through corresponding bolt-holes which it will be understood are formed in the beam. The transverse end-piece 4Yserves to close the outer end of the bore and the slot. The upper and lower side-pieces 5 are between their y ends provided with longitudinal slots 8 which correspond with the slot in the beam though they are not as long; and beyond the front ends of the slot 8 immediately in rear of the end-piece 4 are provided with bolt holes 9.

The clevis consists of the upper and lower curved draft-plates 10 whose ends are connected by vertical bars 11 and which are provided with vertically aligning pairs of boltholes 12. Extending rearward from the plates 10 and overlapping the upper and lower sides 5 of the casting are extension-arms 13, and the same are provided with slots 14 which receive guide-bolts 15 which project through the slots 14 and throughthe vertically opposite perforations 9 of the cap. A pin 16 passes .through perforations 17 formed in the terminalsof the extension-arms 13 in rear of the slot 14 and passes through the slot 3 of the beam, said pin having at its lcenter an enlarged iat disk-like portion 16a that tits the bore 2 of the beam. A heavy coiled spring 18 is interposed within the bore 2 of the beam and between the disk-portion 16a of the bolt 16 and the front end or vertical portion 4 of the casting.

This completes the construction of the clevis, and it will be understood that the usual draft-devices are, through the medium of an ordinary clevis-bolt, loosely and removably connected to any pair of the vertically opposite perforations 12.

The operation of the device will be understood at the outset, and it will be observed that the spring serves to absorb the shock in case the plow should contact with a stump, stone, or other obstacle and thus said shock will neither be transmitted to the teamnor to the point of the plow. v The clevis it will Vbe seen moves upon the metal casting, the pin or bolt 16 riding in the slots 3 and 8 and being guided at its front end by the bolt 15, so that, as will be apparent, the draft is always in alignment with the point of the plow regardless of the position of the clevis-bolt, and as a result, the draft is decreased and the operation and labor rendered less.

Changes in the form and proportion of the parts of my invention may be readily made without departing from the spirit or sacrificing any of the advantages thereof.

claim is- Having described my invention, what/l l. The combination with a plow-beam bored and slotted at its front end, of a elevis having draft-bolt receiving-holes and rearwardly extending arms having perforations aligning with the slot in the beam, a pin arranged in the perforations and in the slot, a stop at the front end of the slot, and a coiled-spring located within the bore between the stop and the pin, substantially as specified.

2. The combination with the beam provided at its front end with a bore and a slot, of a clevs having draft-bolt receiving-openings and provided with rearward slotted eXtensions having perforations, a bolt passed through the perforations and through the slot in the beam, a guide-bolt passed through the slots of the extensions and through the beam and a coiled-spring interposed between the two bolts and located within the bore of the beam, substantially as specified.

3. The combination with the beam bored and slotted at its front end, the U-shaped casting fitted over the end of the beam and embracing the upper and lower sides thereof and provided between its ends with a registering slot and a forward perforation, and bolts passed through perforations in the casting and the beam, of the upper and lower perforated clevis-plates connected at their ends and having upper and lower rearward extensions slotted to agree with the perforations of the casting and perforated to agree with the slots of the casting, and guide-bolts passed through the perforations of the elevis, and slots of the casting and beam, and through the slots of the beam, and olevis and perforations ofthe casting, substantially as specified.

In testimony that I claim the foregoing as my own Ihave hereto axed my signature in the presence of two witnesses.

WILLIAM E. PENNNGTON. Witnesses:

GEO. W. HESS, S. E. BURY. 

